<!DOCTYPE html>
<html>
  <head>
    <title>Baidu Webuploader</title>
    <link rel="stylesheet" href="/lib/bootstrap/css/bootstrap.min.css" />
    <link rel="stylesheet" href="/lib/fex-webuploader/webuploader.css" />
    <link rel='stylesheet' href='/stylesheets/style.css' />
  </head>
  <body>
    <!-- Upload Form -->
    <div id="uploader" class="wu-example">
      <!--用来存放文件信息-->
      <div id="thelist" class="uploader-list"></div>
      <div class="btns">
        <div id="picker">选择文件</div>
        <button id="ctlBtn" class="btn btn-default">开始上传</button>
      </div>
    </div>

    <!-- Javascripts -->
    <script src="/lib/jquery/jquery.min.js"></script>
    <script src="/lib/bootstrap/js/bootstrap.min.js"></script>
    <script src="/lib/fex-webuploader/webuploader.min.js"></script>
    <script>
      $(function() {
        var $ = jQuery,
            $list = $('#thelist'),
            $btn = $('#ctlBtn'),
            state = 'pending',
            uploader;

        uploader = WebUploader.create({

            // 不压缩image
            resize: false,

            // swf文件路径
            swf: '/lib/fex-webuploader/Uploader.swf',

            // 文件接收服务端。
            server: '/api/upload',

            // 选择文件的按钮。可选。
            // 内部根据当前运行是创建，可能是input元素，也可能是flash.
            pick: '#picker'
        });

        // 当有文件添加进来的时候
        uploader.on( 'fileQueued', function( file ) {
            $list.append( '<div id="' + file.id + '" class="item">' +
                '<h4 class="info">' + file.name + '</h4>' +
                '<p class="state">等待上传...</p>' +
            '</div>' );
        });

        // 文件上传过程中创建进度条实时显示。
        uploader.on( 'uploadProgress', function( file, percentage ) {
            console.log( file.id + ': ' + percentage);
            var $li = $( '#'+file.id ),
                $percent = $li.find('.progress .progress-bar');

            // 避免重复创建
            if ( !$percent.length ) {
                $percent = $('<div class="progress progress-striped active">' +
                  '<div class="progress-bar" role="progressbar" style="width: 0%">' +
                  '</div>' +
                '</div>').appendTo( $li ).find('.progress-bar');
            }

            $li.find('p.state').text('上传中');

            $percent.css( 'width', percentage * 100 + '%' );
        });

        uploader.on( 'uploadSuccess', function( file ) {
            $( '#'+file.id ).find('p.state').text('已上传');
        });

        uploader.on( 'uploadError', function( file ) {
            $( '#'+file.id ).find('p.state').text('上传出错');
        });

        uploader.on( 'uploadComplete', function( file ) {
            $( '#'+file.id ).find('.progress').fadeOut();
        });

        uploader.on( 'all', function( type ) {
            if ( type === 'startUpload' ) {
                state = 'uploading';
            } else if ( type === 'stopUpload' ) {
                state = 'paused';
            } else if ( type === 'uploadFinished' ) {
                state = 'done';
            }

            if ( state === 'uploading' ) {
                $btn.text('暂停上传');
            } else {
                $btn.text('开始上传');
            }
        });

        $btn.on( 'click', function() {
            if ( state === 'uploading' ) {
                uploader.stop();
            } else {
                uploader.upload();
            }
        });
    });
    </script>
  </body>
</html>
